The spectroscopic foundation of radiative forcing of climate by carbon dioxide
| Autor: | Eli J. Mlawer, Taumi S. Daniels, Matthew J. Alvarado, Martin G. Mlynczak, David P. Kratz, David W. Fahey, William D. Collins, L. W. Anderson, Jeffrey C. Mast, James E. Lawler, Linda A. Hunt, Daniel Feldman |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Global Climate Models
spectroscopy 010504 meteorology & atmospheric sciences Climate Climate change Forcing (mathematics) Atmospheric sciences 01 natural sciences Spectral line 010309 optics Global Change from Geodesy Paleoceanography 0103 physical sciences Research Letter Meteorology & Atmospheric Sciences Geodesy and Gravity Global Change Spectroscopy Mixing (physics) 0105 earth and related environmental sciences Line (formation) Remote sensing Radiative Processes radiative forcing line shape function carbon dioxide Radiative forcing Physical Modeling Research Letters Characterization (materials science) Geophysics Earth System Modeling Atmospheric Processes General Earth and Planetary Sciences Environmental science Natural Hazards |
| Zdroj: | Geophysical research letters, vol 43, iss 10 Geophysical Research Letters Mlynczak, MG; Daniels, TS; Kratz, DP; Feldman, DR; Collins, WD; Mlawer, EJ; et al.(2016). The spectroscopic foundation of radiative forcing of climate by carbon dioxide. Geophysical Research Letters, 43(10), 5318-5325. doi: 10.1002/2016GL068837. UC Berkeley: Retrieved from: http://www.escholarship.org/uc/item/1s4484gz |
| Popis: | The radiative forcing (RF) of carbon dioxide (CO2) is the leading contribution to climate change from anthropogenic activities. Calculating CO2 RF requires detailed knowledge of spectral line parameters for thousands of infrared absorption lines. A reliable spectroscopic characterization of CO2 forcing is critical to scientific and policy assessments of present climate and climate change. Our results show that CO2 RF in a variety of atmospheres is remarkably insensitive to known uncertainties in the three main CO2 spectroscopic parameters: the line shapes, line strengths, and half widths. We specifically examine uncertainty in RF due to line mixing as this process is critical in determining line shapes in the far wings of CO2 absorption lines. RF computed with a Voigt line shape is also examined. Overall, the spectroscopic uncertainty in present‐day CO2 RF is less than 1%, indicating a robust foundation in our understanding of how rising CO2 warms the climate system. Key Points Line mixing and line shape uncertainties contribute |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|